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Roberto Castello

Researcher at CERN

Publications -  976
Citations -  82449

Roberto Castello is an academic researcher from CERN. The author has contributed to research in topics: Large Hadron Collider & Standard Model. The author has an hindex of 128, co-authored 965 publications receiving 76820 citations. Previous affiliations of Roberto Castello include Université catholique de Louvain & Austrian Academy of Sciences.

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Search for heavy resonances decaying to two Higgs bosons in final states containing four b quarks

Vardan Khachatryan, +2264 more
- 04 Jul 2016 - 
TL;DR: A search is presented for narrow heavy resonances X decaying into pairs of Higgs bosons in proton-proton collisions collected by the CMS experiment at the LHC at s=8TeV, significantly extending previous searches.
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Measurement of spin correlations in tt production using the matrix element method in the muon+jets final state in pp collisions at √s=8 TeV

Vardan Khachatryan, +2289 more
- 10 Jul 2016 - 
TL;DR: In this article, the consistency of the spin correlation strength in top quark pair production with the standard model (SM) prediction is tested in the muon+jets final state.
Journal ArticleDOI

Search for new physics in events with photons, jets, and missing transverse energy in pp collisions at s√ = 7 TeV

S. Chatrchyan, +2253 more
- 19 Mar 2013 - 
TL;DR: In this paper, a search for physics beyond the standard model involving events with one or more photons, jets, and missing transverse energy has been performed by the CMS experiment, and the results of this search are interpreted in the context of three models of new physics: a general model of gauge-mediated supersymmetry breaking, Simplified Models, and a theory involving universal extra dimensions.
Journal ArticleDOI

Combined search for the quarks of a sequential fourth generation

S. Chatrchyan, +2244 more
- 12 Dec 2012 - 
TL;DR: In this paper, limits on the mass of the fourth generation quarks and the relevant Cabibbo-Kobayashi-Maskawa matrix elements are derived in the context of a simple extension of the standard model with a sequential fourth generation of fermions.
Journal ArticleDOI

Measurements of the tt¯ production cross section in lepton+jets final states in pp collisions at 8 TeV and ratio of 8 to 7 TeV cross sections

Vardan Khachatryan, +2290 more
- 07 Jan 2017 - 
TL;DR: In this article, a measurement of the top quark pair production (t-tbar) cross section in proton-proton collisions at the centre-of-mass energy of 8 TeV is presented using data collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 19.6 inverse-femtobarns.